'Macro Reef Dwellers: A Retrospective' / Beautiful, wonderfully colorful and vibrant macro photography by Felix Salazar who aimed his camera onto small coral formations in his own salt water aquariums. / see more of this great work on his website.
Sea Zoanthids ~ Zoanthids are an order of cnidarians commonly found in coral reefs, the deep sea and many other marine environments around the world. These animals come in a variety of different colonizing formations and in numerous colors.
Underwater image of live coral Montastraea annularis. Note polyp tissue (green) around the mouth and base of the tentacles and zooxanthellae (red fluorescence from chlorophyll) in the tissue between polyps. Tentacles also are visible.